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What does “program to interfaces, not implementations” mean?
...dMaintenance();
}
int maintenance() {
mSpecialist->performMaintenance();
return 0;
}
};
class ElectricCar : public Car {
public:
ElectricCar() {
mSpecialist = new ElectricMaintenance();
}
int maintenance(){
...
Amazon S3 Change file download name
... = process.env.BUCKET;
module.exports.main = (event, context, callback) => {
var s3key = event.s3key
var originalFilename = event.originalFilename
var url = s3.getSignedUrl('getObject', {
Bucket: s3Url,
Key: s3key,
Expires: 600,
ResponseContentDisposition: 'attac...
How to import a module given its name as string?
...ll.
Or using __import__ you can import a list of modules by doing this:
>>> moduleNames = ['sys', 'os', 're', 'unittest']
>>> moduleNames
['sys', 'os', 're', 'unittest']
>>> modules = map(__import__, moduleNames)
Ripped straight from Dive Into Python.
...
Is it possible to open a Windows Explorer window from PowerShell?
...s PowerShell. Alias: ii
use system.diagnostics.process
Examples:
PS C:\> explorer
PS C:\> explorer .
PS C:\> explorer /n
PS C:\> Invoke-Item c:\path\
PS C:\> ii c:\path\
PS C:\> Invoke-Item c:\windows\explorer.exe
PS C:\> ii c:\windows\explorer.exe
PS C:\> [diagnostics.pro...
Measuring text height to be drawn on Canvas ( Android )
...this
Rect bounds = new Rect();
mTextPaint.getTextBounds(mText, 0, mText.length(), bounds);
int height = bounds.height();
As you can see for the following images, different strings will give different heights (shown in red).
These differing heights could be a disadvantage in some situations when yo...
In PyCharm, how to go back to last location?
...Left.
This is the way I find out the combination:
(Right click) Go To -> Implementation(s)
Double Shift -> Back
There is an option Back in the section Actions
Ctrl + Shift + A
And then the cursor comes back
share...
MySQL Update Inner Join tables query
... b.mapy = g.longitude
WHERE (b.mapx = '' or b.mapx = 0) and
g.latitude > 0
Update:
Since you said the query yielded a syntax error, I created some tables that I could test it against and confirmed that there is no syntax error in my query:
mysql> create table business (business_id int u...
Why is Python 3.x's super() magic?
...ted if you reference either the super or __class__ names in your method:
>>> super_ = super
>>> class A(object):
... def x(self):
... print("No flipping")
...
>>> class B(A):
... def x(self):
... __class__ # just referencing it is enough
... ...
Circular list iterator in Python
...the iterator and pull values from it one by one, simply call next(pool):
>>> next(pool)
'a'
>>> next(pool)
'b'
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How to export iTerm2 Profiles
...
If you have a look at Preferences -> General you will notice at the bottom of the panel, there is a setting Load preferences from a custom folder or URL:. There is a button next to it Save settings to Folder.
So all you need to do is save your settings firs...